<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>表格边框</title>
</head>
<body>
<h4>带有普通的边框：</h4>
<table border="1">
    <tr>
        <td>First</td>
        <td>Row</td>
    </tr>
    <tr>
        <td>Second</td>
        <td>Row</td>
    </tr>
</table>

<h4>带有粗的边框：</h4>
<table border="8">
    <tr>
        <td>First</td>
        <td>Row</td>
    </tr>
    <tr>
        <td>Second</td>
        <td>Row</td>
    </tr>
</table>

<h4>带有很粗的边框：</h4>
<table border="15">
    <tr>
        <td>First</td>
        <td>Row</td>
    </tr>
    <tr>
        <td>Second</td>
        <td>Row</td>
    </tr>
</table>
</body>
</html>